Reenforced blank material for the manufacture of paper boxes or containers



G. W. SWIFT, JR. REENFORCED BLANK MATERIAL FOR THE MANUFACTURE OF PAPER BOXES 0R CONTAINERS,

A PHCATION FILED M AYI9,1920.

m 9 m 1 N s H mm W my l A d W n. m a a P. Z 4 1i 9 m 8 w A W 1 n eraseare e fa a GEORGE w. swrrr, an, or 'BoRnE-rrrowie, NEW JERSEY.

nnnnroncnn BLANK MATERIAL FOR THE manumcroan or. rarnaroxns .on' coN-mrnms.

To all whom it may concem:

Be-it known that I, GEORGE. W.. SWIFT, J r., a citizen of the United'St'ates, residing'at Bordentown, county of. Burlington, and State of New J ersey, have invented certain new and useful Improvements 'in Reenforced Blank Material for the Manufacture of Paper Boxes or Containers, of which the following is a specification.

This invention relates to of reenforced multi-ply paper material especially designed for forming blanks that are to be scored andfolded into paper boxes or containers. In the manufacture of reenforced paper boxes it has been the practice heretofore to apply reenforcing strips to the outer face of the box blanks along the lines of prospective folds, either before or after creasing or scoring, or to completely form the box and apply the reenforcing strips to the folded corners of the boxes.

In carrying out the present invention the narrow reenforcing strips of cloth or paper are applied to the'web of material during the processof manufacture, said reenforcing strips being arranged between paper layers or plies so as to be entirely concealed in the finished product. These reenforcing strips may be variously arranged in the web of blank materialeither beneath the facing sheet on one side only, or beneath the facing sheets of both surfaces of the composite web.

It is preferred that the reenforcing strips be placed in the zones embracing prospective creases or folds for the formation of the particular size of box or container. The finishedreenforced composite web is superior in strength because of the intimate embodiment of the reinforcing strips within the structure of the web and the finished product presents'a much finer appearance than reenforced blank materials constructed as heretofore. The reenforced blank material may be made'with a corrugated filling web enclosed bythe usual 'gummed surfac-' ing sheets, or it may be made of a plurality of lain webs or sheets properly glued toget er with the reenforcmg strips confined between adjacent sheet layers. In any form it .will be understood that the reenforcing, strips are applied durmg the manufacture of the paper web and one method of so applying suchstri s,-which I have found p'roucti ve ofsatis actory results,.is by gluing the reenforcing strips in the desired position the manufacture tween the outer facing web or sheet 5 to the inner surface of a facing sheet or web,

Specification ofhetters Patent. Patented Aug, 15, 1922, I Application filed May -19.1920. Serial No. 382,560.

and then gluing this reenforced'facing web 7 to the filling Web with the reenforcing strips on the inside. I A

In order that the invention may be more fully understood it will first be described with reference to the accompanying drawings and afterward pointed out 'more particularly in the annexe'd claims.

In said drawings;

Fig. 3 is a similar view ferent method of scoring and cutting for Fig. 1 is a perspective view of a multi-ply paper fabric embodying the present inven-.

roducin' slightly modified forms of box Blanks, s owing the reenforcing strips arranged beneath both outside lining sheets Q or webs.

' Figs. 4 and 5 are perspective views of boxes that are formed respectively from the blanks indicated in figures 2 and 3.

It is well known that in the. production of multi-ply paper board, whether the filling web is plainor corrugated, the several plies or webs of paper are fed from rolls through suitable mechanisms for gluing the several webs together by means of heat and pres- 'sure.. y v

In the drawings the improved reenforced web material is illustrative of the form. having a corrugated filling of-well known char acter, but I would have it understood at the outset, that the present invention is applicable to the manufacture of multi-ply web material with solid filling sheets as well.

In the drawings the .cellular multi-ply v paper fabric 1 includes the inner corrugated filling web 2, having corrugations ex'tendin transversely of the length of'the web, an

the outer pl ain webs 5 and 6 glued respeccorrugated web 2.

The composite" fabric 1 1s alsoprovided y thereof 'tively tothe opposite crowns of the enclosed the corrugated filling web'2 with the result that they are entirely concealed within the facing sheet 5 in the completed product. It

is preferred to locate the reenforcing strips 7 in the zones embracing the prospective folds of the boxblanks, which it is intended to cut from thecontinuousreenforced blank material, the material being by preference of the width of the desired blank, but of unlimited length to include a large number of blanks.

In Fig.2 of the drawings I have shown the composite blank material formed with reenforcing strips beneath a singlesurfacing sheet 5, while in Fig. 3 Ifhave represented the web of blank material having the reenforcing strips beneath both surfacing Sheets or webs 5 and 6. In the application of the .reenforcing strips, whether beneath one or both of the surfacing webs, I have found it convenient to continuously glue the reenforcing strips to the inner surface of the surfacing webs and then apply said re-' enforced webs to the corrugated filling web in the process of manufacturing the 'com-.

"outer surfacing sheets and an inner filler posite blank material.

Referring particularly to Fig. 2, it will be observed that the composite reenforce'd blank material may be formed into blanks at 9, and transverse creases or scores upon the lines indicated at 10, upon which creased lines the blank is intended to be folded.

are designed to be folded into a rectangular box 16 as shown in Fig. 4, the cuts 12 being located at the corners and the strips 7 reenforcing said corners. The reen'forcing strips 7 being entirely concealed by the outer surfacingsheet of the composite web, the finished box will have the same neat appearance as it would have without the reenforcement, whereas itwill have the strength of the reenforcing strips;

In shaping the box 16 shown in i from the blank just described, the small corner flaps 18 are folded within and retained by the longitudinal flaps 19 as indicated by dotted. lines.

amie form of blank is conveniently folded into arectangular box 24: such as shown in Fig. 5, the small corner flaps 25 formed between the cuts 22 and lines 14, being folded within and held by the transverse end flaps 26 of the box.

Itwill be understood that this invention is not limited to-any particular form of box blank, but is intended to cover the composite blank material having concealed reenforcing strips arranged within the zones of prospective folding of the blank.

I claim 1. A composite multi-ply paper fabric for the manufacture of box blanks, comprising web permanently fastened together and concealed relatively narrow reenforcing strips embodied within the composite fabric beneath an outer surfacing sheet in separated parallel zones embracing prospective lines of fold, creases formed in said composite fabric upon said prospective fold lines, and

flap-defining cuts in the reenforced portions of said fabric.

,2. A composite multi-pl paper fabric for the manufacture of box b anks, comprising outer surfacing webs and an inner filling web permanently fastened together and reenforcing strips arranged between both surfacing webs and said filling web in zones embracing prospective lines of fold, said reenforcing strips being concealed within said surfacing webs, and crease lines formed in said composite web in the zones of said reenforcing strips.

3. A composite multi-ply paper fabric for the manufacture of box blanks comprising outer surfacing webs and an inner filling web permanently fastened together and re- I enforcing strips arranged between the surfacin web and said filling web upon prospective lines of fold, said reenforcing strips being concealedwithin said surfacing webs and crease lines formed in said composite web in the zones of said reenforcing strips.

GEORGE W. SWIFT, JR. 

